•   Member of the Steering Committee: MAEB: Congreso Español de Metaheurísticas,
    Algoritmos Evolutivos y Bioinspirados 2005-present.
    (Spanish Conference on Metaheuristics, Evolutionary and Bioinspired Algorithms).
  
  
•   Member of the Steering Committee:  First IEEE Symposium on Computational Intelligence
    in Multi-Criteria Decision-Making (MCDM 2007)
  
  
•   Member of the Steering Committee: CEDI 2007: II Congreso Español de Informática
    (Second Spanish Conference on Informatics), Zaragoza, September 11-14, 2007.

  ———————————— Conference organization  ————————————

• Programme Co-chair of the 8th International Conference on Hybrid Intelligent Systems (HIS2008)
  September 10-12, 2008, Barcelona, Spain. . 


• Conference Co-chair of the 1ª Jornadas de Algoritmos Evolutivos y Metaheurísticas.
  11-14 September, 2007. 
  (En el Marco del 2º Congreso Español de Informática, CEDI2007), Zaragoza, Spain. 
  (First  Spanish Workshop on Evolutionary Algorithms and Metaheuristics).

• Area Chair of the IEEE International Conference on Fuzzy Systems - FUZZ-IEEE 2007
  July 23 - 26 2007, London, England.
  Area Chair: Soft computing and Hybrid Systems (Adaptive, hierarchical, evolutionary,
  neural and nature-inspired systems)

• Conference Co-chair of the First International Workshop on Genetic Fuzzy Systems,
  Granada, Spain, March 17-19, 2005. 

• Conference Co-chair of the IV Congreso Español de Metaheurísticas, Algoritmos
  Evolutivos y Bioinspirados, 14-16 September, 2005, Granada.
  (Spanish Conference on Metaheuristics, Evolutionary and Bioinspired Algorithms).

• Conference Co-chair of the 2nd ACIDCA'2005 International Conference on Machine Intelligence.
  Tozeur, Tunisia, November 5-7, 2005.
  

• Member of the organizing committee. Workshop: “Aprendizaje y Minería de Datos”.
  12-15 November, Sevilla (en el Marco de la Conferencia Iberoamericana de Inteligencia Artificial,
  IBERAMIA 2002).
  (First Spanish Workshop on Learning and Data Mining).

• Technical Program Chair of the Seventh Online World Conference on Soft Computing
  in Industrial Applications, September 2002, Granada.

• Member of the organizing committee. Primer Congreso Español de Algoritmos
  Evolutivos y Bioinspirados, February 2002, Merida, Spain.
  (First Spanish Conference on Evolutionary and Bioinspired Algorithms).

• President of the organizing committee. EUROFUSE  Workshop on Preference Modeling,
  April 2001, Granada, Spain.

• Member of the organizing committee. Primer y Segundo Seminario Español de
  Computación Evolutiva (SCETA'97 y SCETA'99).
  November 1997, Torremolinos, Spain, November  1999, Murcia, Spain.
  (First and Second Spanish Workshop on Evolutionary Computation).

• Member of the organizing committee. Sixth International Conference on Information
  Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU96),
  July 1996, Granada.
  Comité Organizador.

• Member of the organizing committee. Primer Congreso Español de Tecnologías y
  Lógica Fuzzy (First Spanish Conference on Fuzzy Logic and Technologies),
  June 1991,  Granada, Spain. 

   ———————————— Session organization ——————————————

1. ---------------------------------------
   

   Sessions (3):		Toma de Decisiones: Modelad y Agregación de Preferencias Difusas (I, II y III)
   Organizers:		E. Herrera-Viedma, F. Herrera
   Conference:		XIII Congreso Español sobre Tecnologías y Lógica Fuzzy (Estylf’06), Ciudad Real (España),  20-22 Septiembre 2006

   
   
2. ---------------------------------------  

   Session:		Fuzzy Rules Learning Methods for high dimensional problems
   Organizers:		M.J. del Jesus, F. Herrera
   Conference:		International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2006,), Paris (France) July 2-7, 2006.

                     
   
3. ---------------------------------------
   

   Session:		Innovación Docente en Metaheurísticas
   Organizers:		J. Casillas, F. Herrera
   Conference:		Tercer Congreso Español de Metaheurísticas, Algoritmos Evolutivos y Bioinspirados(MAEB'04) Córdoba (España), 4-6 Febrero 2004.

   
   
4. ---------------------------------------
   

   Session:		CWW under a Fuzzy Logic Approach: Models and Applications.
   Organizers:		F. Herrera, E. Herrera-Viedma, L. Martínez
   Conference:		9th Conference on Fuzzy Theory & Technology, North Carolina, USA, September, 2003

   
   
5. ---------------------------------------
   

   Session:		Algoritmos Evolutivos con Codificación Real: Modelos y Operadores
   Organizers:		F. Herrera, M. Lozano
   Conference:		Segundo Congreso Español de Metaheurísticas, Algoritmos Evolutivos y Bioinspirados (MAEB'03) Gijón (España), 5-7 Febrero 2003.

   
   
6. ---------------------------------------
   

   Sessions (3):		Computing with Words: Foundations and Applications I, II and III.
   Organizers:		F. Herrera, E. Herrera-Viedma, L. Martínez
   Conference:		9th IPMU Conference, Annecy (France), July 2002.

   
   
7. ---------------------------------------
   

   Session:		Algoritmos Basados en Colonias de Hormigas: Modelos y Aplicaciones
   Organizers:		O. Cordón, F. Herrera
   Conference:		Primer Congreso Español de Algoritmos Evolutivos y Bioinspirados  (AEB'02), Merida (España), 6-8 Febrero, 2002.

   
   
   
8. ---------------------------------------
   

   Sessions (2):		Genetic Fuzzy Systems: New Developments I and II
   Organizers:		O. Cordón, F. Gomide, F. Herrera, F. Hoffmann, L. Magdalena
   Conference:		9th IFSA World Conference, Vancouver (Canada), July 2001.

   
   
9. ---------------------------------------
   

   Session:		l Foro de Debate: La Encrucijada de la Lógica Fuzzy: Presente y Futuro.
   Organizers:		J.L. Castro, F. Herrera, E. Trillas
   Conference:		.X Congreso Español de sobre Tecnologías y Lógica Fuzzy, Sevilla, Septiembre 2000.

   
   
10. ---------------------------------------
    

    Sessions (2) :		Modelling Linguistic Preferences I and II.
    Organizers:		F. Herrera, E. Herrera-Viedma
    Conference:		8th IPMU Conference, Madrid (Spain), July 2000.

                    
    
11. ---------------------------------------
    

    Sessions (2) :		Genetic Fuzzy Systems: Issues and Applications I and II.
    Organizers:		O. Cordon, F. Herrera
    Conference:		8th IPMU Conference, Madrid (Spain), July 2000.

    
    
12. ---------------------------------------
    

    Session:		Computing with Words in Decision Making.
    Organizers:		F. Herrera, E. Herrera-Viedma
    Conference:		EUROFUSE-SIC'99 Conference, Budapest (Hungary), May 1999.

    
    
    
13. ---------------------------------------
    

    Sessions (2) :		Genetic Fuzzy Systems I and II.
    Organizers:		F. Herrera, L. Magdalena
    Conference:		7th IFSA World Conference, Prague, July 1997.

    
    
    
14. ---------------------------------------
    

    Session:		Genetic Algorithm Applications to Fuzzy Logic Controllers. Genetic Algorithm Applications to Fuzzy Systems.
    Organizer:		F. Herrera
    Conference:		6th IFSA World Conference, Sao Paulo (Brasil), July 1995.